3-spined stickleback · Gasterosteus aculeatus

3-spined stickleback in the Dalby/Thornton Beck

Largest measured 3-spined stickleback: 6.2 cm

The largest 3-spined stickleback measured in Environment Agency surveys of the Dalby/Thornton Beck was 6.2 cm, recorded at Thornton Beck at Top Bridge Fm on 23 September 2021.

Across 39 measured 3-spined stickleback, the median measured length was 4.4 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Dalby/Thornton Beck.

See 3-spined stickleback records across England →

Most recent observation18 September 2024Thornton Beck at Top Bridge Fm

Largest measured 3-spined stickleback: 6.2 cm
Median length: 4.4 cm
Fish measured: 39
Survey locations: 3

Individual EA measurements

Largest measured 3-spined stickleback

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

Length	Survey date	Survey location	Survey ID
6.2 cm	23 Sept 2021	Thornton Beck at Top Bridge Fm	160428
6.1 cm	29 Aug 2012	Thornton Beck at Top Bridge Fm	133102
5.5 cm	29 Aug 2012	Thornton Beck at Top Bridge Fm	133102
5.3 cm	23 Sept 2021	Thornton Beck at Top Bridge Fm	160428
4.9 cm	23 Sept 2021	Thornton Beck at Top Bridge Fm	160428
4.9 cm	23 Sept 2021	Thornton Beck at Top Bridge Fm	160428
4.9 cm	23 Sept 2021	Thornton Beck at Top Bridge Fm	160428
4.9 cm	29 Aug 2012	Thornton Beck at Top Bridge Fm	133102
4.6 cm	23 Sept 2021	Thornton Beck at Top Bridge Fm	160428
4.6 cm	23 Sept 2021	Thornton Beck at Top Bridge Fm	160428

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where 3-spined stickleback were found

Each point marks a survey location with at least one 3-spined stickleback record.

Choose a point on the map to see what was recorded there.

Map points are approximate and don’t show fishing access. Check local permissions before visiting.

Place surveyed	First recorded	Last recorded	Visits finding 3-spined stickleback
Thornton Beck at Top Bridge Fm	11 Sept 1997	18 Sept 2024	6
Thornton Beck Chester Villa caravan site	23 Sept 2021	14 Sept 2022	2
Thornton Beck DS STW bridge	23 Sept 2021	23 Sept 2021	1

Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.

1997–2024

Survey records by year

Each bar shows how many survey visits recorded 3-spined stickleback that year.

197

098

099

000

001

002

003

004

005

006

007

008

009

010

011

112

013

014

015

016

017

118

019

020

321

222

023

124

Fish measured by surveyors

Measured length distribution

See how the 39 measured fish were spread across different length ranges.

Smallest: 3.3 cm
Lower quarter: 4.2 cm
Median: 4.4 cm
Upper quarter: 4.6 cm
Largest: 6.2 cm

0–99 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Dalby/Thornton Beck

Compare other species with enough survey and measurement data for a detailed page.

Bullhead Brown / sea trout European eel

Before you fish

Good to know

These are past survey records, so the fish present today may be different. Map points are approximate—check local access, permissions and fishing rules before visiting.

Learn how RiverFish uses the data →